#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/string.h>
-#include <linux/list.h>
+#include <linux/rculist.h>
#include <linux/notifier.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
return NULL;
}
+static void macvlan_hash_add(struct macvlan_dev *vlan)
+{
+ struct macvlan_port *port = vlan->port;
+ const unsigned char *addr = vlan->dev->dev_addr;
+
+ hlist_add_head_rcu(&vlan->hlist, &port->vlan_hash[addr[5]]);
+}
+
+static void macvlan_hash_del(struct macvlan_dev *vlan)
+{
+ hlist_del_rcu(&vlan->hlist);
+ synchronize_rcu();
+}
+
+static void macvlan_hash_change_addr(struct macvlan_dev *vlan,
+ const unsigned char *addr)
+{
+ macvlan_hash_del(vlan);
+ /* Now that we are unhashed it is safe to change the device
+ * address without confusing packet delivery.
+ */
+ memcpy(vlan->dev->dev_addr, addr, ETH_ALEN);
+ macvlan_hash_add(vlan);
+}
+
+static int macvlan_addr_busy(const struct macvlan_port *port,
+ const unsigned char *addr)
+{
+ /* Test to see if the specified multicast address is
+ * currently in use by the underlying device or
+ * another macvlan.
+ */
+ if (memcmp(port->dev->dev_addr, addr, ETH_ALEN) == 0)
+ return 1;
+
+ if (macvlan_hash_lookup(port, addr))
+ return 1;
+
+ return 0;
+}
+
static void macvlan_broadcast(struct sk_buff *skb,
const struct macvlan_port *port)
{
struct sk_buff *nskb;
unsigned int i;
+ if (skb->protocol == htons(ETH_P_PAUSE))
+ return;
+
for (i = 0; i < MACVLAN_HASH_SIZE; i++) {
hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[i], hlist) {
dev = vlan->dev;
dev->stats.rx_bytes += skb->len + ETH_HLEN;
dev->stats.rx_packets++;
dev->stats.multicast++;
- dev->last_rx = jiffies;
nskb->dev = dev;
if (!compare_ether_addr(eth->h_dest, dev->broadcast))
dev->stats.rx_bytes += skb->len + ETH_HLEN;
dev->stats.rx_packets++;
- dev->last_rx = jiffies;
skb->dev = dev;
skb->pkt_type = PACKET_HOST;
return NULL;
}
-static int macvlan_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+static int macvlan_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
const struct macvlan_dev *vlan = netdev_priv(dev);
unsigned int len = skb->len;
static int macvlan_open(struct net_device *dev)
{
struct macvlan_dev *vlan = netdev_priv(dev);
- struct macvlan_port *port = vlan->port;
struct net_device *lowerdev = vlan->lowerdev;
int err;
+ err = -EBUSY;
+ if (macvlan_addr_busy(vlan->port, dev->dev_addr))
+ goto out;
+
err = dev_unicast_add(lowerdev, dev->dev_addr, ETH_ALEN);
if (err < 0)
- return err;
- if (dev->flags & IFF_ALLMULTI)
- dev_set_allmulti(lowerdev, 1);
-
- hlist_add_head_rcu(&vlan->hlist, &port->vlan_hash[dev->dev_addr[5]]);
+ goto out;
+ if (dev->flags & IFF_ALLMULTI) {
+ err = dev_set_allmulti(lowerdev, 1);
+ if (err < 0)
+ goto del_unicast;
+ }
+ macvlan_hash_add(vlan);
return 0;
+
+del_unicast:
+ dev_unicast_delete(lowerdev, dev->dev_addr, ETH_ALEN);
+out:
+ return err;
}
static int macvlan_stop(struct net_device *dev)
dev_unicast_delete(lowerdev, dev->dev_addr, ETH_ALEN);
- hlist_del_rcu(&vlan->hlist);
- synchronize_rcu();
+ macvlan_hash_del(vlan);
return 0;
}
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
- if (!(dev->flags & IFF_UP))
- goto out;
+ if (!(dev->flags & IFF_UP)) {
+ /* Just copy in the new address */
+ memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
+ } else {
+ /* Rehash and update the device filters */
+ if (macvlan_addr_busy(vlan->port, addr->sa_data))
+ return -EBUSY;
- err = dev_unicast_add(lowerdev, addr->sa_data, ETH_ALEN);
- if (err < 0)
- return err;
- dev_unicast_delete(lowerdev, dev->dev_addr, ETH_ALEN);
+ if ((err = dev_unicast_add(lowerdev, addr->sa_data, ETH_ALEN)))
+ return err;
-out:
- memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
+ dev_unicast_delete(lowerdev, dev->dev_addr, ETH_ALEN);
+
+ macvlan_hash_change_addr(vlan, addr->sa_data);
+ }
return 0;
}
* separate class since they always nest.
*/
static struct lock_class_key macvlan_netdev_xmit_lock_key;
+static struct lock_class_key macvlan_netdev_addr_lock_key;
#define MACVLAN_FEATURES \
(NETIF_F_SG | NETIF_F_ALL_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \
#define MACVLAN_STATE_MASK \
((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT))
+static void macvlan_set_lockdep_class_one(struct net_device *dev,
+ struct netdev_queue *txq,
+ void *_unused)
+{
+ lockdep_set_class(&txq->_xmit_lock,
+ &macvlan_netdev_xmit_lock_key);
+}
+
+static void macvlan_set_lockdep_class(struct net_device *dev)
+{
+ lockdep_set_class(&dev->addr_list_lock,
+ &macvlan_netdev_addr_lock_key);
+ netdev_for_each_tx_queue(dev, macvlan_set_lockdep_class_one, NULL);
+}
+
static int macvlan_init(struct net_device *dev)
{
struct macvlan_dev *vlan = netdev_priv(dev);
dev->features = lowerdev->features & MACVLAN_FEATURES;
dev->iflink = lowerdev->ifindex;
- lockdep_set_class(&dev->_xmit_lock, &macvlan_netdev_xmit_lock_key);
+ macvlan_set_lockdep_class(dev);
+
return 0;
}
const struct macvlan_dev *vlan = netdev_priv(dev);
struct net_device *lowerdev = vlan->lowerdev;
- if (lowerdev->ethtool_ops->get_rx_csum == NULL)
+ if (lowerdev->ethtool_ops == NULL ||
+ lowerdev->ethtool_ops->get_rx_csum == NULL)
return 0;
return lowerdev->ethtool_ops->get_rx_csum(lowerdev);
}
+static int macvlan_ethtool_get_settings(struct net_device *dev,
+ struct ethtool_cmd *cmd)
+{
+ const struct macvlan_dev *vlan = netdev_priv(dev);
+ struct net_device *lowerdev = vlan->lowerdev;
+
+ if (!lowerdev->ethtool_ops ||
+ !lowerdev->ethtool_ops->get_settings)
+ return -EOPNOTSUPP;
+
+ return lowerdev->ethtool_ops->get_settings(lowerdev, cmd);
+}
+
+static u32 macvlan_ethtool_get_flags(struct net_device *dev)
+{
+ const struct macvlan_dev *vlan = netdev_priv(dev);
+ struct net_device *lowerdev = vlan->lowerdev;
+
+ if (!lowerdev->ethtool_ops ||
+ !lowerdev->ethtool_ops->get_flags)
+ return 0;
+ return lowerdev->ethtool_ops->get_flags(lowerdev);
+}
+
static const struct ethtool_ops macvlan_ethtool_ops = {
.get_link = ethtool_op_get_link,
+ .get_settings = macvlan_ethtool_get_settings,
.get_rx_csum = macvlan_ethtool_get_rx_csum,
.get_drvinfo = macvlan_ethtool_get_drvinfo,
+ .get_flags = macvlan_ethtool_get_flags,
+};
+
+static const struct net_device_ops macvlan_netdev_ops = {
+ .ndo_init = macvlan_init,
+ .ndo_open = macvlan_open,
+ .ndo_stop = macvlan_stop,
+ .ndo_start_xmit = macvlan_start_xmit,
+ .ndo_change_mtu = macvlan_change_mtu,
+ .ndo_change_rx_flags = macvlan_change_rx_flags,
+ .ndo_set_mac_address = macvlan_set_mac_address,
+ .ndo_set_multicast_list = macvlan_set_multicast_list,
+ .ndo_validate_addr = eth_validate_addr,
};
static void macvlan_setup(struct net_device *dev)
{
ether_setup(dev);
- dev->init = macvlan_init;
- dev->open = macvlan_open;
- dev->stop = macvlan_stop;
- dev->change_mtu = macvlan_change_mtu;
- dev->change_rx_flags = macvlan_change_rx_flags;
- dev->set_mac_address = macvlan_set_mac_address;
- dev->set_multicast_list = macvlan_set_multicast_list;
- dev->hard_start_xmit = macvlan_hard_start_xmit;
+ dev->netdev_ops = &macvlan_netdev_ops;
dev->destructor = free_netdev;
dev->header_ops = &macvlan_hard_header_ops,
dev->ethtool_ops = &macvlan_ethtool_ops;
if (!netif_carrier_ok(dev))
netif_carrier_on(dev);
} else {
- if (netif_carrier_ok(lowerdev))
+ if (netif_carrier_ok(dev))
netif_carrier_off(dev);
}
}
if (!tb[IFLA_LINK])
return -EINVAL;
- lowerdev = __dev_get_by_index(dev->nd_net, nla_get_u32(tb[IFLA_LINK]));
+ lowerdev = __dev_get_by_index(dev_net(dev), nla_get_u32(tb[IFLA_LINK]));
if (lowerdev == NULL)
return -ENODEV;
- /* Don't allow macvlans on top of other macvlans - its not really
- * wrong, but lockdep can't handle it and its not useful for anything
- * you couldn't do directly on top of the real device.
+ /* When creating macvlans on top of other macvlans - use
+ * the real device as the lowerdev.
*/
- if (lowerdev->rtnl_link_ops == dev->rtnl_link_ops)
- return -ENODEV;
+ if (lowerdev->rtnl_link_ops == dev->rtnl_link_ops) {
+ struct macvlan_dev *lowervlan = netdev_priv(lowerdev);
+ lowerdev = lowervlan->lowerdev;
+ }
if (!tb[IFLA_MTU])
dev->mtu = lowerdev->mtu;
unregister_netdevice(dev);
if (list_empty(&port->vlans))
- macvlan_port_destroy(dev);
+ macvlan_port_destroy(port->dev);
}
static struct rtnl_link_ops macvlan_link_ops __read_mostly = {
goto err1;
return 0;
err1:
- macvlan_handle_frame_hook = macvlan_handle_frame;
+ macvlan_handle_frame_hook = NULL;
unregister_netdevice_notifier(&macvlan_notifier_block);
return err;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff